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Locomotive support seat forgings will have longitudinal scratches due to excessive pressure during ingot rolling

A lot of equipment is composed of various parts. Although these parts are inconspicuous, they are often very important parts in mechanical equipment. So when manufacturing these parts, we should pay great attention to the details of production. Sometimes when forging the locomotive support seat forgings, some careless forging methods may lead to cracks in the locomotive support seat forgings. Let's take a look at the relevant production precautions.

Due to the research on the microstructure effect of heat treatment in the alloy die forging system, the software optical microscope and the image using the hot forging method understand that its characteristics are that the temperature of the heated billet exceeds the phase transformation point and the mold temperature is lower than the phase transformation point, and the microstructure of the hot die forging lacks uniformity, which is caused by the phase transformation and uneven deformation during the deformation process, The heat treatment system cannot completely remove the inhomogeneity of the microstructure of alloy die forgings.

However, with the extension of high temperature holding time, the degree of irregularity decreases. In the case of double heat treatment, the cooling rate after heat treatment is slower. In addition to transverse surface cracks, transverse cracks can also occur in die forgings, because the cold ingot is heated too fast in the low temperature zone during the forging process or the tension caused by the center, or the plasticity of high carbon steel and high alloy steel is poor, which is caused by too little power in the forging operation.

机车支撑座锻件

In addition to the surface and the internal surface, there are also different defects. The longitudinal cracks in the forging surface exist in the extension or disturbance, or in the center of the peak near the cap, which is used to form the mold and the inner wall of the new defect. The main reason for the latter is that the pressure is too high when rolling the ingot, and longitudinal scratches occur, In addition, the amount at the cutting end of the die forging is too small, so there is secondary shrinkage of the hole or residual shrinkage hole near the blank mouth end. In addition, the internal longitudinal crack forging is caused by the tension of the central part of the equipment.

Due to the reasonable distribution of metal wires, the yield potential of metal materials can be maximized. Therefore, when important parts of die forgings are used, strict requirements are imposed on the metal flow lines. Through understanding the hot forging process of the aerodynamic distribution part, the design process of improvement measures is proposed. As the aluminum alloy support gasket is used as the support wing of the aircraft, the important parts of the bearing must be closed to improve the mechanical performance of corrosion resistance and fatigue resistance.

During the production and forging of the locomotive support seat forgings, if the production matters are not noticed, it is easy to cause cracks in the products, and even lead to the direct scrapping of the product parts, which will cause the manufacturer to cause large cost losses. Therefore, in order to reduce such production problems, the manufacturer must pay attention to relevant operating matters when forging. Through reading the above contents, do you know anything about the operation of locomotive support seat forgings?


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